Diploma Strength of Materials Important Formulas

Diploma Strength of Materials Important Formulas

Diploma Strength of Materials Important Formulas

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Welcome to Diploma Exam Corner, In this section you can find out Diploma Strength of Materials Important Formulas. You can download Diploma Strength of Materials Important Formulas as pdf.

Chapter: 1.1: Engineering materials: Classification – definition of Mechanical properties – ferrous metals – cast iron – uses – advantages – types of cast iron – properties and applications – effect of impurities on cast iron. steel – classification – alloying elements – purpose of alloying – effect of alloying elements on steel – uses of steels – properties of mild steel – defects in steel – applications – properties of hard steel – market forms of steels – nonferrous metals – properties and uses.
Chapter: 1.2: Mechanical testing of materials:
Compression test – bend test – hardness test – Brinell hardness test, Vickers hardness test, Rockwell hardness test – impact test – fatigue test creep test. Tensile test of mild steel in UTM – stress strain diagram – limit of proportionality – elastic limit – yield stress – breaking stress – ultimate stress – percentage of an elongation and percentage reduction in area – problems.
Chapter: 1.3: Friction
Introduction – definition – force of friction – limiting friction – static friction – dynamic friction – angle of friction – coefficient of friction – laws of static and dynamic friction. Description only.

Diploma Strength of Materials Important Formulas
Diploma Strength of Materials Important Formulas

Chapter: 2.1: Simple stresses and strains
Definition – load, stress and strain – classification of force systems: tensile, compressive and shear force systems. Hooke’s law – definition Young’s modulus – working stress, factor of safety, load factor, shear stress and shear strain – modulus of rigidity. Linear strain – deformation due to tension and compressive forces – simple problems in tension, compression and shear forces.
Chapter: 2.2: Elastic constants
Definition – lateral strain – poison’s ratio – volumetric strain – bulk modulus – volumetric strain of rectangular and circular bars – problems connecting linear, lateral and volumetric deformations – elastic constants and their relationship – problems on elastic constants. Composite bar – definition – problems in composite bars subjected to tension and compression. Temperature stresses and strains – simple problems.
Chapter: 2.3 Strain Energy
Definition – proof resilience – modulus of resilience – the expression for strain energy stored in a bar due to axial load – instatntaneous stresses due to gradual, sudden, impact and shock loads – problems computing instantaneous stress and deformation in gradual, sudden, impact and shock loadings

Chapter: 3.1: Properties of sections
Definition – center of gravity and centroid – position of centroids of plane
geometrical figures such as rectangle, triangle, circle and trapeziumproblems to determine the centroid of angle, channel, T and I sections only – Definition – centroidal axis parallel axis theorem and perpendicular axis theorem (
Moment of Inertia of lamina of rectangle, circle, triangle, I and channel
sections – Definition Problems computing moment of inertia and radius of gyration for angle, T, Channel and I section
Chapter: 3.2: Thin Shells
Definition – Thin and thick cylindrical shell shell subjected to internal pressure stress causes in a thin cylindrical shell subjected to internal pressure simple problems –
subjected to internal pressure induced in a thin spherical shell subjected to internal pressure problems – change in diameter and volume o to internal pressure –
Chapter: 4.1: Theory of Torsion
Assumptions – torsion equation hollow shafts – power transmitted Torsional rigidity –
hollow and solid shafts in weight and strength considerations Advantages of hollow shafts over solid shafts
Chapter: 4.2: Springs
Types of springs – Difference between open and closely coiled helical springs
coiled helical spring subjected to an axial load shear stress, deflection, stiffness and resilience of closed coiled helical springs.

5.1: SF and BM diagrams
Classification of beams sign conventions for shear force and bending moment
loadings – Relationship between load, force and bending moment at a section – shear force diagram and bending moment diagram of cantilever and simply supported beam subjected to point load and uniformly distributed load (UDL) – Determination of Maximum bending moment in cantilever beam and simply supported beam when they are subjected to point load and uniformly distributed load.
Chapter: 5.2: Theory of bending
Theory of simple bending – Assumptions – Neutral axis – bending stress distribution – moment of resistance – bending equation – M/I=f/y=E/R – Definition – section modulus – rectangular and circular sections – strength of beam – simple problems involving flexural formula for cantilever and simply supported beam.

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Diploma Strength of Materials Previous Year Question paper with answer key – February 2022 Download now

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